class_docstr: Reader for the OSISAF l3 netCDF format.
class_docstr_tok: ["Reader","for","the","OSISAF","l3","netCDF","format","."]
docstr: Get grid in case of filename info being used.
docstr_tok: ["Get","grid","in","case","of","filename","info","being","used","."]
code: def _get_finfo_grid(self):
      """Get grid in case of filename info being used."""
      if self.filename_info["grid"] == "ease":
          self.area_def = self._get_ease_grid()
          return self.area_def
      elif (
          self.filename_info["grid"] == "polstere"
          or self.filename_info["grid"] == "stere"
      ):
          self.area_def = self._get_polar_stereographic_grid()
          return self.area_def
      else:
          raise ValueError(
              f"Unknown grid type: {self.filename_info['grid']}"
          )
  
file_path: satpy/satpy/readers/osisaf_l3_nc.py
imports: import logging
  from datetime import datetime
  from satpy.readers.netcdf_utils import NetCDF4FileHandler
label_desc: Use image node_id 4 for calling the OSISAFL3NCFileHandler obj's underlying member method code with example usage: obj._get_finfo_grid() and returns: self, self